通信专业英语文献翻译 通信工程专业英语论文

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1、通信专业英语文献翻译通信工程专业英语论文导读：就爱阅读网友为您分享以下“通信工程专业英语论文”的资讯，希望对您有所帮助，感谢您对92to.com的支持!TheGeneralSituationofAT89C51TheAT89C51isalow-power,high-performanceCMOS8-bitmicrocomputerwith4KbytesofFlashProgrammableandErasableReadOnlyMemory(PEROM)and128bytesRAM.Thedeviceismanufacturedusin

2、gAtmel’shighdensitynonvolatilememorytechnologyandiscompatiblewiththeindustrystandardMCS-51?instructionsetandpinout.Thechipcombinesaversatile8-bitCPUwithFlashonamonolithicchip;theAtmelAT89C51isapowerfulmicrocomputerwhichprovidesahighlyflexibleandcosteffectivesolutiontom

3、anyembeddedcontrol9applications.Features:?CompatiblewithMCS-51?Products?4KBytesofIn-SystemReprogrammableFlashMemory?Endurance:1,000Write/EraseCycles?FullyStaticOperation:0Hzto24MHz?Three-LevelProgramMemoryLock?128x8-BitInternalRAM?32ProgrammableI/OLines?Two16-BitTimer/

4、Counters?SixInterruptSources?ProgrammableSerial9Channel?LowPowerIdleandPowerDownModesTheAT89C51providesthefollowingstandardfeatures:4KbytesofFlash,128bytesofRAM,32I/Olines,two16-bittimer/counters,afivevectortwo-levelinterruptarchitecture,afullduplexserialport,on-chipos

5、cillatorandclockcircuitry.Inaddition,theAT89C51isdesignedwithstaticlogicforoperationdowntozerofrequencyandsupportstwosoftwareselectablepowersavingmodes.1TheIdleModestopstheCPUwhileallowingtheRAM,timer/counters,serialportandinterruptsystemtocontinuefunctioning.ThePowerD

6、ownModesavestheRAMcontentsbutfreezestheoscillatordisablingallotherchipfunctionsuntilthenexthardwarereset.BlockDiagramPinDescription:VCCSupply9voltage.GNDGround.Port0：Port0isan8-bitopendrainbidirectionalI/Oport.AsanoutputporteachpincansinkeightTTLinputs.When1sarewritten

7、toport0pins,thepinscanbeusedashighimpedanceinputs.(Sink/flow)Port0mayalsobeconfiguredtobethemultiplexedloworderaddress/databusduringaccessestoexternalprogramanddatamemory.InthismodeP0has2internalpull-ups.Port0alsoreceivesthecodebytesduringFlashprogramming,andoutputsthe

8、codebytesduringprogramverification.Externalpull-upsarerequiredduringprogramverification.Port1：Port1isan8-bitbidirecti